Current-collector.



No. 728,614. l PATENTED MAY 19, 1 903.

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"CURRENT COLLECTOR.

APPLIOAT ION FILED DEC. 2, 1901.

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UNITED v STATES Patented May 19, 1963.

PATENT OFFICE.

EDWARD D. PRIEST, OF SCIIENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

CURRENT-COLLECTOR.

SPECIFICATION forming part of Letters Patent N 0. 728,614, dated May 19, 1903.

Application filed December 2,1901. Serial No. 84,317. (No modelt) T aZZ whom, it "may concern:

Be it known that I, EDWARD D. PRIEST, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Current-Collectors,of which the following is a specification;

My invention relates'to current-collectors for electric machines, such as generators, mo-

:0 tors, rotary converters, or other types of alternating-current machines in which a rubbing contact is maintained between brushes and ring contacts mounted on a rotary element.

The objects of the invention are to provide an economical construction and a true and rigid mounting of the collector-rings with reference to the axis of rotation, to promote security of insulation, and at the same time to provide such an arrangement of parts that they may be assembled and taken apart with great facility.

The invention embodies various structural features the novelty of which will be here-- inatter fully described, and definitely pointed out in the claims.

For a better understanding of my invention reference should be had to the accompanying drawing, which shows in part elevation and part section a current-collector embodying my invention and in operative position with relation to the armature-shaft and end bearing.

The collector shown inthe drawing is designed to be used in connection with an electric machine having its armature-bearin gs extended inward from the inner faces of the frame of the machine and provided with oil grooves or receptacles 1 and 2, substantially 0 as shown in my former patent, No. 595,410, granted December 14, 1897. The shell 3, upon which the collector-rings are mounted, is provided at its outer end with an enlarged flange 1, having oil-throwing ribs 5 and 6 on its outer periphery, and the inner end of said shell 3 is provided with acircular web 7,having a central aperture adapted to make a driving fit with the armature-shaft 8 and provided with a sleeve 9, having aseat 10 turned thereon for the reception of the ring-clamping disk 11. The outer periphery of shell 3 14 and are adapted to receive in the spaces 22, between the ribs20 and 21, space-rings 23, substantially covered with'a layer of mica or other insulation, and surrounding the outer periphery of the same is a second layer or strip 24, of mica or other insulation, adapted to be bound thereon by engagement with the inner side of ribs 21 and by 'wrappings of 7c non-metallic bands or threads 25. The layer of insulation surrounding the spacing-rings 23 is formed by folding strips 23 about the opposite edges of the spacing-ring. The strips are taken so as to substantially inclose the ring without being sufficiently large to lap over one another. The second layer or strip 24 tends to hold the strips 23 in position. The inner face of flange t is provided with a circular groove 26. So, also, is theinner face of the ring-clamping disk 11' provided with groove 27, adapted to receivethe spacingrings 23 and insulating material in the same manner as the spaces 22 on the sides of the collector-rings. The clamping-disk 11 is adapted to be forced toward the rings, and thereby securely bind the collector-rings, the spacing-rings, and the insulating material together. The means for thus fOrcingtheclamping-disk 11 toward the rings consists in the presentinstance in providingsaid disk 11 with a series of tapped holes and providing the circular web 7'with a corresponding series of registering countersunk holes 29 with softmetal bushings 30 at the bottoms of the countersunk portions to form oil-tight packings about the tap-bolts 31, passing therethrough and engaging the tapped holes 28 in the clamping-disk 11. By the turning of these bolts the disk 11 is drawn toward the collector-rings, ico thus binding all parts together securely. Each collector-ring is provided with a lead.

That for ring 17 is shown in the drawing, and that for each of the other rings is arranged substantially in the same manner, but of course only extending to its respective ring. These leads are each connected to its respective ring by means of a shouldered socket 32, that has been previously sweated fast with solder to the bared end of a lead and which engages the ring by passing through a hole in the web thereof and held securely therein by means of a nut 33, threaded upon its end and operating to bind said web between its inner end and the shoulderon socket 32. The intermediate ring 16 is provided with abushed opening 3 for the free passage therethrough ot' the lead to ring 17, and the innermost ring 15 is provided'with two such hushed open-' ings 3& for the leads of the other two rings.

It is to be noted in the construction above described that all parts to be insulated are Such that the insulating material may be readily and securely applied to them separately and that all parts may be assembled by merely placing them in position and binding them securely in place by means of the single clamping-disk ll.

While I have confined the above description to the form of construction shown in the drawing, it is to be understood that I do not restrict myself to the same, for many changes and modifications may be made without departing from the scope of my invention.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A current-collector comprising a shell provided at one end with a flange, a plurality of collector-rings surrounding said shell and insulated therefrom, a plurality of insulated space-rings adapted to engage opposite sides of said collector-rings, and a single means for clamping said collector and space rings to said shell.

2. A current-collector comprising a shell provided at one end with a flange having a groove in its inner face, a plurality of collector-rings surrounding said shell and provided with a groove on each side, insulated spacerings adapted to engage in said grooves, and a single clamping means to secure said parts together.

3. A current-collector comprising a shell provided at one end with a flange having a groove in its inner face, a plurality of collector-rings surrounding said shell and provided on opposite sides with grooves, an end clamping-disk provided with a groove in its inner face, insulated space-rings adapted to engage said grooves, and means for moving said clamping-disk axially to bind said rings together upon said shell.

4:. A current-collector comprising a shell, insulating material surrounding said shell, bands of binding-wires wrapped around said insulating material, metallic strips bridging said bands of wires, and collector-rings seated upon said strips of metal.

5. A current-collector comprising a shell, insulating material surrounding said shell, bands of binding-wires wrapped around said insulating material, metallic strips bridging said bands of wi re,collector-rings seated upon said metallic strips, insulated space-rings to hold said collector-rings in place, and means for clamping said rings together.

6. A current-collector comprising a shell provided at one end with a flange and at the other end with a circular Web having a projecting sleeve, a clamping-disk adapted to be seated upon the periphery of said sleeve, collector and space rings surrounding said shell, and means to move said clamping-disk upon its seat.

7. A space-ring for current-collectors comprising a continuous core of metal, strips of insulating material folded about the opposite edges of said core, a band of insulating material surrounding the outer periphery of the core and folded insulation at its edges, and non-metallic cords or binders wound about the said band of insulating material.

8. In a collector, a plurality of grooved collecting-rings, a plurality of spacing-rings provided with the necessary insulation fitting into grooves in the collecting-rings,and means for clamping the rings endwise.

9. In a collector, a grooved collector-ring, a spacing-ring adapted to enter a groove in a collector-ring, and clamping means.

10. In a collector, a plurality of grooved collecting-rings, a plurality of spacing-rings fitting into grooves in the collecting-rings and insulated therefrom, and means for preventing the separation of said collecting-rings.

In witness whereof I have hereunto set my hand this 29th day of November, 1901.

EDYVARD D. PRIEST.

Witnesses:

BENJAMIN B. HULL, MARGARET E. WOOLLEY. 

